and by the alfred p. sloan foundation. supporting science, technology, and improved economic performance and financial literacy in the 21st century. and with the ongoing support of these institutions and foundations. and... this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. captioning sponsored by macneil/lehrer productions captioned by media access group at wgbh access.wgbh.org "the electric company" is brought to you by... find your voice and share it, american greetings, proud sponsor of "the electric company." agreement from the u.s. department of education's ready to learn grant, and viewers like you, thank you. you try your best to win a contest or a game. score -- the score is the number of points made by each team in a game. equal -- when things are equal, it means you have the same amount. add -- when you add numbers, you put them together. penalty -- if you break the rules in a game,